Tyre/profile Choices 255/35/18 Vs 255/40/18 All Round

[bhappy]

To the Guru's

Trying to decide between going 255/35/18 vs 255/40/18 all round on my s15, also trying to decide what the best rubber is for me max $400 a tyre. 1st choice so far is the goodyear f1 gs-d3's 2nd choice is the falken rt615. Need some good input here guys!

Regards,

Albert

[n15m0]

You need to find out which has the closest rolling diameter to your stock rim/wheel combo so

1. its legal (in Qld ur only allowed no more than 15mm difference)

2. doesn't stuff up ur speedo

So check your stock tyre profile and compare it in this website with the two profiles ur choosing from

http://www.1010tires.com/TireSizeCalculator.asp

[bhappy]

Ive already done the calculations before, the 40 profile is approx 5% higher rolling diameter compared to stock

[salad]

I would choose the 255/35 as it's very close to the stock rolling diameter. And there is a big difference in tyres between the RT615 and GS-D3. The Falken is more of a motorsports tyre (not quite an R-compound though) compared to the Goodyear which is just a street tyre. You have to decide whether you want your tyres to last longer or have more grip.

[Omurru]

I'd go the 40's bigger sidewall = more flex = better grip. Plus 35's will make for a harsher ride.....just get the speedo recalibrated.....

[Psymon]

Having driven around on the Goodyear Eagle F1's for a while now i can say they are a fantastic street tyre!